import sys

import numpy as np

arr1 = np.array([1,2,3,4])
print(arr1, type(arr1))

arr2 = np.arange(0, 10, 2)
print(arr2)

arr3 = np.random.random((2,3))
print(arr3)

arr4 = np.random.randint(0, 10, size=(2,3))
print(arr4)

arr5 = np.array([1,2,3,4])
arr6 = np.array([1,2,3,4])
print(arr5 + arr6)

arr7 = np.zeros((2,3))
print(arr7)

arr8 = np.ones((2,3))
print(arr8)

arr9 = np.full((2,3), 3)
print(arr9)

arr10 = np.eye(3)
print(arr10)

arr11 = np.array([[[]]])
print(sys.getsizeof(arr11))